Method and device for detecting cracks in compressor blades
AssigneeMTU Aero Engines AG
InventorsMichael Zielinski, Gerhard Ziller
Life of this patent
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Abstract
A detection device for detecting cracks in compressor blades, having non-contacting sensors distributed in several planes and disposed in the vicinity of the rotor detects cycle times of blades at the sensors and/or relative and absolute changes in a gap width between a blade and the compressor housing. The captured data are compared to corresponding reference data in a memory device and analyzed.
Claims10
A device for detecting cracks in compressor blades, having:
- a detection device with non-contacting sensors distributed in one or more planes perpendicular to the axis of the turbo engine, these sensors being disposed in the vicinity of the rotor, for detecting cycle times of blades at the sensors;
- a memory device, in which data of reference cycles under different conditions and rpm's are stored;
- and
- an analytical unit for comparing the data captured by the detection device to corresponding data from the memory device.
A device for detecting cracks in compressor blades, having:
- a detection device with non-contacting sensors distributed in one or more planes perpendicular to the axis of the turbo engine, these sensors being disposed in the vicinity of the rotor, for detecting relative and absolute changes in a gap width between a blade and the compressor housing;
- a memory device, in which data of reference cycles under different conditions and rpm's are stored;
- and
- an analytical unit for comparing the data captured by the detection device to corresponding data from the memory device.
A method for detecting cracks in compressor blades of a turbo engine, having the steps:
- detecting cycle times of blades at the sensors employing non-contacting sensors distributed in one or more planes perpendicular to the axis of the turbo engine, these sensors being disposed in the vicinity of the rotor;
- and
- comparing the data captured in the detection step to corresponding data from a memory device, wherein data of reference cycles under different conditions and rpm's are stored in the memory device.
A method for detecting cracks in compressor blades of a turbo engine, having the steps:
- detecting relative and absolute changes in a gap width between a blade and the compressor housing employing non-contacting sensors distributed in one or more planes perpendicular to the axis of the turbo engine;
- and
- comparing the data captured in the detection step to corresponding data from a memory device, wherein data of reference cycles under different conditions and rpm's are stored in the memory device.
Dependencies are inferred from the claim text.